<template>
    <el-card class="box-card">
        <!-- 右侧图标案例 -->
        <!-- <el-button type="primary">添加品牌<el-icon class="el-icon--right"><Plus/></el-icon></el-button>   -->
        <!-- 卡片顶部添加品牌按钮 -->
        <el-button type="primary" icon="plus" @click="addTrademark">添加品牌</el-button>
        <!-- 表格组件：用于展示已有平台数据 -->
        <el-table style="margin: 10px 0px;" border :data="trademarkArr">
            <el-table-column label="序号" width="80px" align="center" type="index"></el-table-column>
            <el-table-column label="品牌名称" prop="tmName"></el-table-column>.
            <el-table-column label="品牌LOGO">
                <template #="{ row, $index }">
                    <img :src="row.logoUrl" alt='链接过期' style="width:100px;height: 100px;">
                </template>
            </el-table-column>
            <el-table-column label="品牌操作">
                <template #="{ row, $index }">
                    <el-button type="primary" size="small" icon="Edit" @click="updateTrademark(row)"></el-button>
                    <el-popconfirm :title="`您确定要删除${row.tmName}?`" width="250px" icon="Delete" @confirm='removeTradeMark(row.id)'>
                        <template #reference>
                            <el-button type="primary" size="small" icon="Delete" ></el-button>
                        </template>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页器组件
                pagination
                   v-model:current-page:设置分页器当前页码
                   v-model:page-size:设置每一个展示数据条数
                   page-sizes:用于设置下拉菜单数据
                   background:设置分页器按钮的背景颜色
                   layout:可以设置分页器六个子组件布局调整
            -->
        <el-pagination @size-change="sizeChange" @current-change="getHasTrademark" v-model:current-page="pageNo"
            v-model:page-size="limit" :page-sizes="[3, 5, 7, 9]" pager-count="9" :background="true"
            layout="prev, pager, next, jumper, ->, sizes, total" :total="total" />
    </el-card>
    <!-- 对话框组件:在添加品牌与修改已有品牌的业务时候使用结构 -->
    <!-- 
        v-model:属性用户控制对话框的显示与隐藏的 true显示 false隐藏
        title:设置对话框左上角标题
    -->
    <el-dialog v-model="dialogFormVisible" :title="title">
        <el-form style="width: 80%;"  :model="trademarkParams" :rules="rules" ref="formRef">
            <el-form-item label="品牌名称" label-width="100px" prop="tmName">
                <el-input placeholder="请您输入品牌名称" v-model="trademarkParams.tmName"></el-input>
            </el-form-item>
            <el-form-item label="品牌LOGO" label-width="100px" prop="logoUrl">
                <!-- upload组件属性:action图片上传路径书写/api,代理服务器不发送这次post请求  -->
                <el-upload class="avatar-uploader"  action="/api/admin/product/fileUpload" :show-file-list="false"
                    :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload">
                    <img v-if="trademarkParams.logoUrl" :src="trademarkParams.logoUrl" class="avatar" />
                    <el-icon v-else class="avatar-uploader-icon">
                        <Plus />
                    </el-icon>
                </el-upload>

            </el-form-item>
        </el-form>
        <!-- 具名插槽:footer -->
        <template #footer>
            <el-button type="primary" size="default"  @click="cancel">取消</el-button>
            <el-button type="primary" size="default" @click="confirm">确定</el-button>
        </template>
    </el-dialog>
</template>

<script setup lang="ts">
import { GET_TOKEN } from '@/utils/token';
import { ElMessage, UploadProps, formEmits } from 'element-plus'
//引入组合式API函数ref
import { ref, onMounted, reactive, nextTick } from 'vue';
import { reqHasTrademark, reqAddOrUpdateTrademark, reqDeleteTrademark} from '@/api/product/trademark';
import type { Records, TradeMark, TradeMarkResponseData } from '@/api/product/trademark/type';
//当前页码
let pageNo = ref<number>(1);
//每一页展示多少条数据
let limit = ref<number>(3);
//存储已有品牌数据总数
let total = ref<number>(0)
//存储已有品牌的数据
let trademarkArr = ref<Records>([]);
//控制对话框显示与隐藏
let dialogFormVisible = ref<boolean>(false)
//定义收集新增品牌数据
let trademarkParams = reactive<TradeMark>({
    tmName: '',
    logoUrl: ''
})
let title = ref<string>("哈哈")
//获取el-form组件实例
let formRef = ref();
//获取已有品牌的接口封装为一个函数：在任何情况下获取数据，调用此函数即可
const getHasTrademark = async (pager = 1) => {
    pageNo.value = pager
    let result: TradeMarkResponseData = await reqHasTrademark(pageNo.value, limit.value);
    if (result.code == 200) {
        //存储已有品牌总个数
        total.value = result.data.total;
        trademarkArr.value = result.data.records;
    }
}

//组件挂载完毕钩子---发一次请求,获取第一页、一页三个已有品牌数据
onMounted(() => {
    getHasTrademark();
});

//当下拉菜单发生变化的时候触发次方法
//这个自定义事件,分页器组件会将下拉菜单选中数据返回
const sizeChange = () => {
    //当前每一页的数据量发生变化的时候，当前页码归1
    getHasTrademark();
}


const addTrademark = () => {
    dialogFormVisible.value = true
    //收集数据清空
    title.value = "添加品牌"
    trademarkParams.id = 0;
    trademarkParams.tmName = ''
    trademarkParams.logoUrl = ''
    nextTick(() => {
        formRef.value.clearValidate('tmName');
        formRef.value.clearValidate('logoUrl');
    })
}



const updateTrademark = (row:TradeMark) => {
    nextTick(() => {
        formRef.value.clearValidate('tmName');
        formRef.value.clearValidate('logoUrl');
    })
    title.value = "修改品牌"
    dialogFormVisible.value = true
    // trademarkParams.id = row.id
    // trademarkParams.tmName = row.tmName
    // trademarkParams.logoUrl = row.logoUrl
    //ES6语法合并对象
    Object.assign(trademarkParams, row);
}

const cancel = () => {
    dialogFormVisible.value = false

}

const confirm = async () => {
    //在你发请求之前,要对于整个表单进行校验
    //调用这个方法进行全部表单相校验,如果校验全部通过，在执行后面的语法
    await formRef.value.validate();
    let result:any = await reqAddOrUpdateTrademark(trademarkParams);
    //添加品牌成功
    if(result.code == 200) {
        //关闭对话框
        dialogFormVisible.value = false
        ElMessage({
            type:'success',
            message: '操作成功'
        });
        //再次发请求获取已有全部的品牌数据
        if(title.value == "修改品牌"){
            getHasTrademark(pageNo.value);
        }else{
            getHasTrademark(1);
        }

    } else {
        //添加品牌失败
        ElMessage({
            type:'error',
            message: '操作失败'
        });
        dialogFormVisible.value = false
    }

}


//上传图片组件->上传图片之前触发的钩子函数
const beforeAvatarUpload: UploadProps['beforeUpload'] = (rawFile) => {
    //钩子是在图片上传成功之前触发,上传文件之前可以约束文件类型与大小
    //要求:上传文件格式png|jpg|gif 4M
    if (rawFile.type == 'image/png' || rawFile.type == 'image/jpeg' || rawFile.type == 'image/gif') {
        if (rawFile.size / 1024 / 1024 < 4) {
            return true;
        } else {
            ElMessage({
                type: 'error',
                message: '上传文件大小小于4M'
            })
            return false;
        }
    } else {
        ElMessage({
            type: 'error',
            message: "上传文件格式务必PNG|JPG|GIF"
        })
        return false;
    }
}
//图片上传成功钩子
const handleAvatarSuccess: UploadProps['onSuccess'] = (response, uploadFile) => {
    //response:即为当前这次上传图片post请求服务器返回的数据
    //收集上传图片的地址,添加一个新的品牌的时候带给服务器
    trademarkParams.logoUrl = response.data;
    //图片上传成功,清除掉对应图片校验结果
    formRef.value.clearValidate('logoUrl');

}

//品牌自定义校验规则方法
const validatorTmName = (rule: any, value: any, callBack: any) => {
    //是当表单元素触发blur时候,会触发此方法
    //自定义校验规则
    if (value.trim().length >= 2) {
        callBack();
    } else {
        //校验未通过返回的错误的提示信息
        callBack(new Error('品牌名称位数大于等于两位'))
    }
}
//品牌LOGO图片的自定义校验规则方法
const validatorLogoUrl = (rule: any, value: any, callBack: any) => {
    //如果图片上传
    if (value) {
        callBack();
    } else {
        callBack(new Error('LOGO图片务必上传'))
    }
}

//表单校验规则对象
const rules = {
    tmName: [
        //required:这个字段务必校验,表单项前面出来五角星
        //trigger:代表触发校验规则时机[blur、change]
        { required: true, trigger: 'blur', validator: validatorTmName }
    ],
    logoUrl: [
        { required: true, validator: validatorLogoUrl }
    ]
}

//气泡确认框确定按钮的回调
const removeTradeMark = async (id: number) => {
    //点击确定按钮删除已有品牌请求
    let result = await reqDeleteTrademark(id);
    if (result.code == 200) {
        //删除成功提示信息
        ElMessage({
            type: 'success',
            message: '删除品牌成功'
        });
        //再次获取已有的品牌数据
        getHasTrademark(trademarkArr.value.length > 1 ? pageNo.value : pageNo.value - 1);
    } else {
        ElMessage({
            type: 'error',
            message: '删除品牌失败'
        })
    }
}
</script>

<style scoped>
.avatar-uploader .avatar {
    width: 178px;
    height: 178px;
    display: block;
}
</style>

<style>
.avatar-uploader .el-upload {
    border: 1px dashed var(--el-border-color);
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
    border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    text-align: center;
}
</style>